trying 2000 iterations read thread 1100695872 start write thread 1109088576 start write thread 1109088576 stop read thread 1100695872 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.10system 0:12.84elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 88inputs+7008outputs (0major+215minor)pagefaults 0swaps Pass: faulty sync/aio dio writes give EFAULT and don't write garbage Command exited with non-zero status 2 0.00user 0.00system 0:00.14elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.10system 0:06.92elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.11user 0.96system 0:02.18elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 2720inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.09user 1.01system 0:01.91elapsed 57%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.08user 1.03system 0:02.16elapsed 51%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.14user 0.94system 0:02.07elapsed 52%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.00user 0.08system 0:07.03elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+136minor)pagefaults 0swaps 4.10user 2.58system 0:15.39elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k 319104inputs+409600outputs (1599major+24184minor)pagefaults 0swaps dio_truncate: child reading file parent loop # 0 parent loop # 1 parent loop # 2 parent loop # 3 parent loop # 4 parent loop # 5 parent loop # 6 parent loop # 7 parent loop # 8 parent loop # 9 0.00user 1.12system 2:22.59elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+475minor)pagefaults 0swaps num_passes set to 10 Pass 1... num_passes set to 10 Pass 1... Pass 2... num_passes set to 10 Pass 1... Pass 2... Pass 3... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... 2.27user 20.40system 1:00.08elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164403minor)pagefaults 0swaps 0.00user 0.87system 0:02.07elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 0.67user 9.88system 0:11.39elapsed 92%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+95minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps